Reports

A right margin specified in the Page Setup dialog box overrides RightMargin.

Some printers require a minimum margin. If you specify a margin that is smaller than the minimum margin, the minimum margin will be used when printing.

The default is 0 mm.

The RightMargin property is not supported on client report definition (RDLC) report layouts. The create layout suggestion function sets the margin values on RDLC report layouts.

Reference